webpack.config.formviewer.js

'use strict';

//Note node-sass throws erro like "rror: ENOENT: no such file or directory, scandir '**/node_modules/node-sass/vendor'"
// just:
// $ node node_modules/node-sass/scripts/install.js
// $ npm rebuild node-sass

// Modules
const webpack = require('webpack');
const autoprefixer = require('autoprefixer');
// const HtmlWebpackPlugin = require('html-webpack-plugin');
const ExtractTextPlugin = require('extract-text-webpack-plugin');
const CopyWebpackPlugin = require('copy-webpack-plugin');
const path = require('path');

/**
 * Env
 * Get npm lifecycle event to identify the environment
 */
const ENV = process.env.npm_lifecycle_event;
const isTest = ENV === 'test' || ENV === 'test-watch';
const isProd = ENV === 'build-prod-formviewer';

/* eslint-disable no-console */
console.log('---> INFO from webpack config: now building: ', isProd ? '"PRODUCTION" bundle' : '"DEV/TEST" bundle');
/* eslint-enable no-console */

module.exports = function makeWebpackConfig () {
  /**
   * Config
   * Reference: http://webpack.github.io/docs/configuration.html
   * This is the object where all configuration gets set
   */
  var config = {};

  /**
   * Entry
   * Reference: http://webpack.github.io/docs/configuration.html#entry
   * Should be an empty object if it's generating a test build
   * Karma will set this when it's a test build
   */
  config.entry = isTest ? {} : {
    app: './src/app/formviewer'
  };

  /**
   * Output
   * Reference: http://webpack.github.io/docs/configuration.html#output
   * Should be an empty object if it's generating a test build
   * Karma will handle setting it up for you when it's a test build
   */
  config.output = isTest ? {} : {
    // Absolute output directory
    path: isProd ? __dirname + '/dist' : __dirname + '/preview/dist',

    // Output path from the view of the page
    // Uses webpack-dev-server in development
    publicPath: isProd ? '/' : 'http://localhost:8080/',

    // Filename for entry points
    // Only adds hash in build mode
    filename: isProd ? 'eda.easyFormViewer.min.js' : 'eda.easyFormViewer.js',

    // Filename for non-entry points
    // Only adds hash in build mode
    chunkFilename: isProd ? 'eda.easyFormViewer.[hash].js' : 'eda.easyFormViewer.bundle.js',

    // tried to load angular rmore than once FIX:
    resolve: {
      alias: {
        'angular': path.resolve(path.join(__dirname, 'node_modules', 'angular'))
      }
    }
  };

  /**
   * Externals
   */
  config.externals = {
    'angular': 'angular',
    jquery: 'JQuery'
  };

  /**
   * Devtool
   * Reference: http://webpack.github.io/docs/configuration.html#devtool
   * Type of sourcemap to use per build type
   */
  if (isTest) {
    config.devtool = 'inline-source-map';
  } else if (isProd) {
    config.devtool = 'source-map';
  } else {
    config.devtool = 'source-map';
  }

  /**
   * Loaders
   * Reference: http://webpack.github.io/docs/configuration.html#module-loaders
   * List: http://webpack.github.io/docs/list-of-loaders.html
   * This handles most of the magic responsible for converting modules
   */

  // Initialize module
  config.module = {
    preLoaders: [{
        test: /\.jsx?$/,
        loader: 'remove-flow-types',
        include: path.join(__dirname, './src/app/formviewer')
    }],
    loaders: [{
      // JS LOADER
      // Reference: https://github.com/babel/babel-loader
      // Transpile .js files using babel-loader
      // Compiles ES6 and ES7 into ES5 code
      test: /\.js$/,
      loader: 'babel',
      exclude: /node_modules/
    }, {
      // CSS LOADER
      // Reference: https://github.com/webpack/css-loader
      // Allow loading css through js
      //
      // Reference: https://github.com/postcss/postcss-loader
      // Postprocess your css with PostCSS plugins
      test: /\.css$/,
      // Reference: https://github.com/webpack/extract-text-webpack-plugin
      // Extract css files in production builds
      //
      // Reference: https://github.com/webpack/style-loader
      // // if wanted css and js into same bundle:
      // Use style-loader in development.
      // loader: isTest ? 'null' : 'style!css!postcss'
      // // if wanted to separate css into another chunk file:
      loader: isTest ? 'null' : ExtractTextPlugin.extract('style-loader', 'css-loader!postcss-loader')
    }, {
      test: /\.scss$/,
      // // if wanted css and js into same bundle:
      // loader: isTest ? 'null' : 'style!css!postcss!sass'
      // // if wanted to separate css into another chunk file:
      loader: isTest ? 'null' : ExtractTextPlugin.extract('style-loader', 'css-loader!postcss-loader!sass-loader')
    },{
      // ASSET LOADER
      // Reference: https://github.com/webpack/file-loader
      // Copy png, jpg, jpeg, gif, svg, woff, woff2, ttf, eot files to output
      // Rename the file using the asset hash
      // Pass along the updated reference to your code
      // You can add here any file extension you want to get copied to your output
      test: /\.(png|jpg|jpeg|gif|svg|woff|woff2|ttf|eot)$/,
      loader: 'file'
    }, {
      test: /\.json$/,
      loader: 'json-loader'
    }, {
      // HTML LOADER
      // Reference: https://github.com/webpack/raw-loader
      // Allow loading html through js
      test: /\.html$/,
      loader: 'raw'
    }]
  };

  // ISTANBUL LOADER
  // https://github.com/deepsweet/istanbul-instrumenter-loader
  // Instrument JS files with istanbul-lib-instrument for subsequent code coverage reporting
  // Skips node_modules and files that end with .test
  if (isTest) {
    config.module.preLoaders.push({
      test: /\.js$/,
      exclude: [
        /node_modules/,
        /\.spec\.js$/
      ],
      loader: 'istanbul-instrumenter',
      query: {
        esModules: true
      }
    });
  }

  /**
   * PostCSS
   * Reference: https://github.com/postcss/autoprefixer-core
   * Add vendor prefixes to your css
   */
  config.postcss = [
    autoprefixer({
      browsers: ['last 2 version']
    })
  ];

  /**
   * Plugins
   * Reference: http://webpack.github.io/docs/configuration.html#plugins
   * List: http://webpack.github.io/docs/list-of-plugins.html
   */
  config.plugins = [];

  // Skip rendering index.html in test mode
  if (!isTest && !isProd) {
    // Reference: https://github.com/ampedandwired/html-webpack-plugin
    // Render index.html
    config.plugins.push(
      // new HtmlWebpackPlugin({
      //   template: './src/public/index.html',
      //   inject: 'body'
      // }),

      // Reference: https://github.com/webpack/extract-text-webpack-plugin
      // Extract css files
      // Disabled when in test mode or not in build mode
      new ExtractTextPlugin('eda.formviewer.css')
    );
  }

  // Add build specific plugins
  if (isProd) {
    config.plugins.push(
      // Reference: http://webpack.github.io/docs/list-of-plugins.html#noerrorsplugin
      // Only emit files when there are no errors
      new webpack.NoErrorsPlugin(),

      // Reference: http://webpack.github.io/docs/list-of-plugins.html#dedupeplugin
      // Dedupe modules in the output
      new webpack.optimize.DedupePlugin(),

      // Reference: http://webpack.github.io/docs/list-of-plugins.html#uglifyjsplugin
      // Minify all javascript, switch loaders to minimizing mode
      new webpack.optimize.UglifyJsPlugin(),

      // Copy assets from the public folder
      // Reference: https://github.com/kevlened/copy-webpack-plugin
      new CopyWebpackPlugin([{
        from: __dirname + '/preview/vendors',
        to: __dirname + '/dist/vendors'
      }]),

      // Reference: https://github.com/webpack/extract-text-webpack-plugin
      // Extract css files
      // css bundle file:
      new ExtractTextPlugin('eda.formviewer.css')
    );
  }

  /**
   * Dev server configuration
   * Reference: http://webpack.github.io/docs/configuration.html#devserver
   * Reference: http://webpack.github.io/docs/webpack-dev-server.html
   */
  config.devServer = {
    contentBase: './src/public',
    stats: 'minimal'
  };

  return config;
}();